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A backsheet that can delay failure in alternating wet and dry environments

A dry-wet alternation and environment-friendly technology, applied in the direction of coating, polyester coating, polyurea/polyurethane coating, etc., can solve the problem of large backboard and achieve the effect of delaying failure

Active Publication Date: 2018-11-09
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, according to the published statistical results of failure cases of power stations or distributed components, the failure of the backplane accounts for a large proportion, while the problems of coating blistering and peeling account for a large proportion of the failure of the backplane.

Method used

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  • A backsheet that can delay failure in alternating wet and dry environments
  • A backsheet that can delay failure in alternating wet and dry environments
  • A backsheet that can delay failure in alternating wet and dry environments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a backsheet capable of delaying failure in an alternate wet and dry environment, such as figure 1 As shown, it includes an intermediate insulating layer 2, a first weather-resistant layer 1 formed on the upper surface of the intermediate insulating layer 2, and a second weather-resistant layer 3 formed on the lower surface of the intermediate insulating layer 2. The first weather-resistant layer 1 is made of organic silicon-fluorine The carbon interpenetrating network coating layer, and the second weather-resistant layer 3 is a fluorocarbon coating. The backboard is coated with corresponding coatings on both surfaces of the intermediate insulating layer 2 by means of spraying, dipping, roller coating, scraping, etc. It is cured by baking (ultraviolet or infrared, etc.) below ℃. The first weather-resistant layer 1 is a matte type, and the gloss is below 40; the second weather-resistant layer 3 is a high-gloss type, and the gloss is more than 70;...

Embodiment 2

[0041] This example provides a backsheet capable of delaying failure in alternating wet and dry environments, and its preparation method is consistent with that in Example 1, except that the raw materials for the silicone-fluorocarbon interpenetrating network coating layer include the following parts by weight Number of components: 60 parts of fluorine-containing resin, 5 parts of silicone prepolymer, 10 parts of polyester resin, 5 parts of inorganic filler, 1 part of auxiliary agent, 10 parts of diluent, 10 parts of isocyanate curing agent; fluorocarbon coating The raw materials include the following components in parts by weight: 55 parts of fluorine-containing resin, 10 parts of polyester resin, 5 parts of inorganic filler, 1 part of auxiliary agent, 10 parts of diluent, and 10 parts of isocyanate curing agent.

Embodiment 3

[0043] This example provides a backsheet capable of delaying failure in alternating wet and dry environments, and its preparation method is consistent with that in Example 1, except that the raw materials for the silicone-fluorocarbon interpenetrating network coating layer include the following parts by weight The number of components: 50 parts of fluorine-containing resin, 10 parts of silicone prepolymer, 20 parts of polyester resin, 15 parts of inorganic filler, 2 parts of auxiliary agent, 20 parts of diluent, 20 parts of isocyanate curing agent; fluorocarbon coating The raw materials include the following components in parts by weight: 50 parts of fluorine-containing resin, 20 parts of polyester resin, 15 parts of inorganic filler, 2 parts of auxiliary agent, 20 parts of diluent, and 20 parts of isocyanate curing agent. In this embodiment, the raw materials of the silicone-fluorocarbon interpenetrating network coating layer and the raw materials of the fluorocarbon coating a...

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Abstract

The invention relates to a back board for delaying failure in dry and wet alternative environment. The back board comprises a middle insulating layer, a first weather-proof layer formed on any surface of the middle insulating layer, and a second weather-proof layer formed on the other surface of the middle insulating layer, wherein the first weather-proof layer is an organic silicon-fluorocarbon interpenetrating network coating layer; the second weather-proof layer is a fluorocarbon coating. The first weather-proof layer is the organic silicon-fluorocarbon interpenetrating network coating layer, and the second weather-proof layer is the fluorocarbon coating, as the silicone prepolymer with excellent hydrophobicity is introduced, the organic silicon-fluorocarbon interpenetrating network coating layer can perform condensation reaction, and can be further crosslinked and solidified in a heating condition, so as to form an interpenetrating network coating, the excellent hydrophobicity of organic silicon and the excellent weather resistance of fluorocarbon can be perfectly combined, absorbency swelling of the coating can be weakened, and the probability of foaming and peeling of the coating can be reduced.

Description

technical field [0001] The invention relates to the field of solar cell module components, and relates to a back sheet, in particular to a back sheet capable of delaying failure in an alternating dry and wet environment. Background technique [0002] At present, the depletion of traditional energy and the environmental pollution caused by it have prompted human beings to seek renewable and clean energy. Solar energy has been vigorously advocated and promoted by various countries because of its abundant reserves, no pollution, and convenient development. At present, a lot of research and development work is mainly focused on improving the power generation efficiency of the system and the long-term stability of the system. Cells are the core components of the entire photovoltaic power generation system, and their stable operation is fundamental to the long-term operation of the entire system. [0003] The backplane is an important protective part of the entire cell assembly....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D167/00C09D175/04C09D127/12C09D7/61C09D7/63C09D7/65C08J7/04H01L31/049
CPCY02E10/50
Inventor 张宇辉杨楚峰王淼张云飞
Owner SUZHOU FIRST PV MATERIAL CO LTD
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